Bogie for railway and like carriages



Oct. 21 192% A. KAMP BOGIE FOR RAILWAY AND LIKE CARRIAGES Filed June 19 L Patented Oct. 2l, 1924n u NIT En ALPHONSE KAMP, or osrnnn, BELerUivr,

v FOR RAILWAY .AND LIKE CARRIAGES.

Application filed June 19,1923. Serial No. 646,359.

provement in bogies Jfor railway and tramway carriages of the Bissel type, that( is to 'say of the type wherein the centre of rotation of the bogie is not coaxial with the centre of gureof same, and the said invention has for its main object to devise a bogie of the type'referred to which will ensure a better distribution of the load than is the case for the known constructionsyand wherein any undesirable stresses will lbe avoided.

Most single axle bogies of the Bissel type, are loaded in two points, that is to say at the @entre of two blade springs arranged aboveV the 'grease-boxes, and 'small links or connecting members suspended to ofthe said springs tend to bring the bogie back to its initial position by pulling obliquely on the'said springs, thereby putting an abnormal additional stress on same.

It has alsov been suggested to load Asuch bogies lin three nonelastic points, but in such cases thev two rods which were provided to bring the bogie backV to its initial position were'not arranged in a rational manner and the said construction has there-l fore" Iiot'gven Satisfaction! It has further been proposed to construct bo'ges of the. Bissel type adapted, to be bi'oghtbak 1D0-"their initial Position by means four @ennemies iilmbs 0f equal length of which two -were'placed nearerto tliec'entre otrotaton than. the.' @We 'Others whereby" the rioredstant of the S21-idf@- neLCtiIg members were' subiefted t0 Te greater movement so that their reaction was that of the two other more v lent than connecting Vmembers.

the ends g The present invention comprises a. bog-ie ot the Bissel type. loaded in three elastic vpoints and which is adapted to be brought back to its initial position by means of two rod connections of particular construction.

In order that the invention may be more readily understood, one embodiment of same 1s, by way of example only, illustrated by the accompanying drawing, wherein:

Fig. 1 is a longitudinal elevation showing` a carriage frame provided with a pair of bogies in accordance with the invention;

Figs. 2 and 3 are respectively a` corresponding plan view and a corresponding end g view, and Y Figst and 5 are two different detail views of one end of one of the rod connections provided according to the invention to bring the. bogies back in their initial position.

Aismay be seen Jfrom the drawing, the bogie according to the invention comprises a bogie frame C which in the embodiment illustrated surrounds the wheels. The carriage frame carrying the body of the carriage is supported on two similar bogiesot the Bissel type and each of the said bogies is loaded in three points ofwhich one S is the vcentre of rotation ofthe bogie and is situatedon the longitudinal-axis of the carriage frame towards the centre yofv samer The corresponding end of the bogie frame is at thisv point, that is in its centre, provided with a spherical socket adapted to receive the spherical lower end of a 'vert'ical pivot pinE able to slide vertically with-` in a" guide piece G secured to the carriage frame; the load at this point being'transmitted throughthe medium ot a single or compound spring The load is moreover transmittedfto the bogie in' two 'points P positioned syInmetrically in relation to the longitudinal axis and towards the end of the carriage frame,

At each of these two points the load is transmitted byy means of arod connection B lof which the upper end bears by means of a ball and soclet joint on a spring` l which itself bears on the correspondlnm` en-:l of the bogie 'trame C and is located in boX o secured to the said bogie traine C, while the lower end of the said rod connection B carries a. suitable braclret to the corresponding point of the carriage trarne.

The lower end of the rod connection l might be iitted with a single pin only, but if it is desired to obtain an initial return to the normal position, it is necessary to provide the said lower end with two parallel pins t situated on the saineborizontal axis,

Besides7 as the movements oit the lower end or" the rod connections B about the centre of rotation S do not take place in a straight line, the two pins t support the carriage frame through the niediuin of an intermediate piece l which is itself capable of oscillation about the axis oi pair of lrnives @provided on the brackets cured to the carriage trarne and with their said axis at right angles to the pins t. The bogie has, besides the ordi-- nary suspension of carriages, thek said suspension comprising; in the eni'bodiin nt shown two blade sprines passing` under the greaseboxes and reaction springs CB connectingr the bog/ie trarne C to the et tlf' said blade springs, which always worl un'- der normal stress, considering that in the transverse direction the grease boxes are rigid in relation to the bogie frame.

The operation of the above described bogie will be easily understood. Under the action of centrifugal torce, the carriage frame carrying' the carriage body will exert a radi-al pressure towards the outside oli the curve. rlhe points S of the bogies being kept in position in relation to the carriage traine, are thrown in an outward direction in relation to the curve., and the bogie frames are thus compelled to pivot about the said points and to take a position in whicl their own longitudinal axis orrns at the points S an angle with the longitudinal artis of the carriage franie i e. extends for instance indicated `by the dot and dash lines start` in@` at S and ending at X Figq 2.

by the rod connections B which being; selfreacting` owing` vto the lrnilieand double-pin bearings through which the load is trans'- rnitted to them tend to bring the longitudinal axes of the bogies back to the position in which they are coaxial with the longi- AVtudinal axis of the carriage traine as soon rllhese inoveinents however, are controlled a diagonal connecting rod T which coinpels thein to act in unison.

in the embodiment shown the two pins t are provided on the lower end ot the rod coni'iections B, but it is of course obvious that they ina-y just as well be provided on the upper end of the said rod connections. Further, these pins are in theeinbodiinent illustrated secured on the rod connections B taernselves but it should `beV understood that hey niay also be provided on the bogie frames or on the brackets secured to the carri ge traine, or even on the intermediate piece between the said brackets and the correspondingI end of the rod connections. Similarly, it is obvious that the two knives about which the said intermediate` piece is able to oscillate may if desired be replaced by one or two pins.

l claiin: c

l, ln a bogie for railway and trarnwav carriages7 of the type wherein the centre or i tion is not coaxial with the centre oi"a re of the bogie structure, the coinbinati n of a bog'ie-irarne, a sphere-ended vertical pivot-pin bearing on the centre of the transverse ineinber of the said bogie-:traine nearest the centre ot the carriage so` as to forni the turning centre oi3 said bogieefranie., and resilien-ly supporting the carriage traine at a point situated on the longitudinal axis thereof, and two. self-reacting univer sally-movable rod connections bearing on two points oi the other transverse inernber oit the bo catrame and resilientlysupportingv the cani trarne at two points situated jnirnetrically in relation to the longitudinal axis oi said traine and nearer to the end thereof than its point of support by the aforesaid pivot-pin, substantially as described.

2. ln a bogie for railway and tramway carriages7 ot the type wherein the centre et rotation is not coaxial with the centro oi figure or' the bog'ie structurel1 the combi-- nation of a bogi.ei`raine, a sphere-ended vertical pivot-pin bearing; on the centre ot the transverse ineinber of the said bogie-ilrainc nearest the centre olz the carriage so as to forni the turning centre oi said bogie-fr-anie and resiliently supporting the carriage traine at a point situated on the longitu dinal airis thereof5 andA two self-reacting universally-niova'ble rod connections bearing` on two points of the other transverse` ineinber ot the `bogie-ztrarne and resi iently supporting the carriage traine at two points situated symmetrically in relation to the longitudinal airis of said trainej and nearer to the end thereof than its point of supportby the aforesaid pivot-pin7 said rod connections having `he joints at ltheir ends formed on the one hand by a ball and socket arrangement and on vthe other hand by a pair of parallel pins provided on the corresponding end of said rod Connections and arranged to cooperate wltll an lntermedmte knlfe bearlng 1n such a manner to allow Ythe oscillation of said rod connections about two axes at right angles to each other.

3. In e combination of two boges as claimed n claim l, the provision of at least one diagonal connecting-rod extending between and pvot-ally eonneoted to opposite Corners of the corresponding ends of the 10 two boge-fr-ames.

In testimony whereof l signed hereunto my neme in the presence of two subscribing witnesses. s

ALPHONSE KAMP. Witnesses:

F. J. ZULEAUF, R. PEGHERE. 

